David Bolton Exit Device Finish Matching Across Door Pairs: How to Keep Both Leaves Consistent When the Schedule Gets Built Why Finish Matching on a Door Pair Is Harder Than It Looks This article is for hardware specifiers, commercial subcontractors, and facility managers who deal with door pairs equipped with exit devices... commercial door hardware door pairs exit devices hardware finish hardware specification Sep 7, 2026 Our Blog
David Bolton The Keyed Removable Mullion on a Fire-Rated Pair: Why This One Component Shapes the Entire Opening Spec What This Article Covers This guide is written for commercial contractors, hardware specifiers, and facility managers who are configuring a fire-rated door pair and trying to understand how a keyed re... NFPA 80 exit devices fire-rated door pairs removable mullion windstorm compliance Sep 7, 2026 Our Blog
David Bolton Exit Device Trim for Outside Operation: Matching the Function to the Opening Before the Schedule Ships What Is Exit Device Outside Trim -- and Why Does It Matter? Exit device outside trim is the hardware component mounted on the pull side of a door equipped with panic or fire exit hardware. The exit de... access control hardware exit devices hardware schedules outside trim panic hardware Aug 31, 2026 Our Blog
David Bolton What ANSI A156.3 Actually Tests on an Exit Device -- and Why Grade 1 Matters on Your Next Project What This Article Covers -- and Who It Helps If you are specifying panic hardware for a school gymnasium, a retail main exit, a hospital corridor, or an industrial egress door, the compliance label on... ANSI A156.3 code compliance exit devices fire exit hardware panic hardware Aug 29, 2026 Our Blog
David Bolton Mantrap Installations: How to Specify the Right Hardware for a Two-Door Security Vestibule What This Guide Covers and Who It Is For A mantrap, also called a security vestibule or airlock entry, is a controlled access passage that uses two doors in sequence to prevent tailgating and unauthor... access control commercial door hardware electrified hardware exit devices security vestibule Aug 20, 2026 Our Blog
David Bolton Delayed Egress Alarm Modules: What Specifiers and Facility Teams Get Wrong Before the Door Goes Live What This Article Covers -- And Who It Helps Delayed egress alarm modules are one of the most misunderstood options in the exit device world. Specifiers order the wrong configuration. Facilities teams... code compliance delayed egress electrified hardware exit devices life safety Aug 17, 2026 Our Blog
David Bolton Exit Only on Stair Tower Doors: Getting the Hardware Package Right the First Time What This Article Covers and Who It Helps Stair tower doors are among the most frequently misspecified openings in commercial construction. They sit at the intersection of egress requirements, re-entr... code and compliance commercial door hardware exit devices fire exit hardware stair tower hardware Aug 16, 2026 Our Blog
David Bolton Aluminum Storefront Door Hardware: What Actually Goes on That Opening and Why Each Piece Matters What This Guide Covers and Who It Is For Aluminum storefront doors are the most common commercial entrance type in retail, office, and mixed-use buildings -- and they account for a significant share o... aluminum door hardware commercial entrance electric strikes exit devices storefront hardware Aug 15, 2026 Our Blog
David Bolton Through-Bolt vs. Sex Bolt for Exit Devices: Which Fastening Method Belongs on Your Door Two Ways to Anchor an Exit Device -- and Why the Choice Is Not Interchangeable This article explains the practical difference between through-bolt and sex bolt (also called barrel bolt or Chicago scre... door hardware fasteners exit devices fire door hardware installation panic hardware Aug 3, 2026 Our Blog
David Bolton The Concealed Offset Panic Threshold: What Specifiers Get Wrong Before the Floor Goes Down What This Article Covers and Who It Helps This guide explains how panic thresholds with a concealed offset work, why they are misspecified more often than almost any other threshold type, and what spe... commercial door hardware egress compliance exit devices panic hardware thresholds Aug 1, 2026 Our Blog
David Bolton When an Exit Device Stops Latching: How the Cam and Housing Assembly Fails and What to Do Before Replacing the Whole Device The Bar Moves But the Door Does Not Latch: A Common Exit Device Problem With a Specific Cause This article is for facility managers, commercial installers, and maintenance technicians who are troubles... commercial door hardware exit device repair exit devices fire door compliance panic hardware maintenance Jul 30, 2026 Our Blog
David Bolton Electric Latch Retraction on Exit Devices: How Access Control Unlocks the Door Without Touching the Bar What This Article Covers and Who It Helps If you are specifying or installing an access-controlled opening that also requires panic hardware, electric latch retraction (ELR) is the mechanism that ties... access control electric latch retraction electrified hardware exit devices fire-rated hardware Jul 28, 2026 Our Blog